Lipids Flashcards
which part of a phospholipid is hydrophiobic ?
fatty acids
which part of a phospholipid is hydrophillic ?
the phospahte group
what makes up phospholipids ?
a phosphate group with a glycerol head and fatty acid tails
how many fatty acid tails are in a phospholipid ?
2
what kind of bond is created in triglyceride ?
an Esther bond
what is released in forming a triglyceride ?
H2O
how many fatty acid tails are connected to triglycerides ?
3
what makes up triglycerides ?
a glycerol backbone with fatty acid tails attached on
are lipids soluble ?
no
what atoms make up lipids ?
carbon, hydrogen and oxygen
what can lipids be used for ?
heat insulation under the skin to reduce heat loss and protection around organs to act as a cushion against impact
how much energy is needed to overcome the attractions in saturated fatty acids ?
a lot of energy is needed because many molecules can line up easily so the attractions are strong due to straight chains
how much energy is needed to overcome the attractions in unsaturated fatty acids ?
bent chains mean bonds are as strong so less energy is needed
What are the two types of lipids ?
Sterols and cholesterol
What does the hydrophillic and hyrdophiobic nature of phospholipids mean ?
It is amphipathic sp has a dual nature when reacting to water
